ADL and IADL Assessment for an Elderly Parent: How to Score Care Needs

You've noticed changes in your parent — maybe they're skipping showers, the bills are piling up, or the kitchen is a mess. But "something seems off" isn't a plan of action. You need an objective way to measure what your parent can and can't do independently so you can make informed decisions about care.

That's exactly what ADL and IADL assessments do. They're the same clinical tools that doctors, social workers, and care managers use to evaluate functional capacity — and you can run simplified versions during a regular visit.

What Are ADLs and IADLs?

Activities of Daily Living (ADLs) are the basic physical self-care tasks a person needs to survive. The Katz Index of Independence in ADLs evaluates six core domains:

1. Bathing — Can they wash themselves without assistance?
2. Dressing — Can they select clothes and dress independently?
3. Toileting — Can they use the bathroom alone?
4. Transferring — Can they move from bed to chair without help?
5. Continence — Do they maintain bladder and bowel control?
6. Feeding — Can they eat without assistance?

Each domain scores 1 (independent) or 0 (dependent). A score of 6 means full independence; lower scores indicate increasing need for hands-on personal care.

Instrumental Activities of Daily Living (IADLs) are the more complex skills needed to live independently in a community. The Lawton-Brody IADL Scale covers eight domains:

1. Telephone use — Can they look up numbers and dial?
2. Shopping — Can they handle grocery shopping independently?
3. Food preparation — Can they plan and cook meals?
4. Housekeeping — Can they maintain a reasonable standard of home cleanliness?
5. Laundry — Can they do their own washing?
6. Transportation — Can they drive or arrange their own transport?
7. Medication management — Can they take the right medications at the right times?
8. Financial management — Can they handle bills, banking, and budgeting?

Scores range from 0 (low function, dependent) to 8 (high function, independent).

Why IADLs Matter More Than You Think

IADL decline almost always precedes ADL decline. A parent who can still shower and dress independently but has stopped managing bills, forgotten how to use the washing machine, or can no longer follow a recipe is showing early warning signs that basic self-care will be next.

This is clinically significant because IADL decline is one of the earliest functional markers of cognitive impairment. Financial management — the most cognitively demanding IADL — is often the first to go.

How to Assess Your Parent During a Visit

You don't need to sit your parent down with a formal questionnaire. Observe during a normal visit:

Watch them cook a meal. Can they follow the steps? Do they forget ingredients or leave the stove on? Do they struggle with can openers, jars, or oven dials?

Check the mail and bills. Are bills paid on time? Are there duplicate payments or unopened envelopes? Is the chequebook balanced?

Look at the medication setup. Are pills organised in a pillbox? Are there expired prescriptions? Do quantities suggest they're skipping doses or double-dosing?

Observe mobility. Do they hold onto furniture when walking? How long does it take them to stand from a chair? Do they avoid stairs?

Check the house. Is laundry piling up? Is the bathroom clean? Are there signs of difficulty with basic household maintenance?

What the Scores Tell You

• ADL 6 + IADL 7-8: Your parent is functionally independent. Monitor annually and address specific environmental hazards.
• ADL 6 + IADL 4-6: IADL support needed. This is the stage for introducing grocery delivery, bill-pay services, a pill organiser, or a daily money manager (typically costing $25–100/hour in the US). Your parent can still handle personal care but needs help with community-living skills.
• ADL 4-5 + IADL declining: The transition zone. Your parent needs regular in-home care assistance — likely non-medical home care to start, potentially Medicare-certified home health care if skilled nursing or therapy is needed.
• ADL 0-3: Significant personal care dependence. This typically requires either full-time in-home care or residential placement, depending on the family's resources and the parent's preferences.

The Clinical Next Step

If your informal assessment reveals IADL decline, the most valuable next step is scheduling a Medicare Annual Wellness Visit (in the US) and requesting a formal cognitive screen — either the Mini-Cog or MoCA. If cognitive impairment is detected, Medicare covers a comprehensive 60-minute assessment and care planning session under CPT code 99483. In the UK, request a GP referral for a memory assessment. In Australia, contact My Aged Care for a free assessment under the Single Assessment System.

The Warning Signs Toolkit includes printable ADL and IADL scoring sheets designed for family use, plus a clinical screening worksheet that maps your observations to specific next steps — doctor visits, legal documents, care level decisions.

An objective score turns "I think something's wrong" into "here's exactly what's changed and what we need to address." That's the foundation for every productive conversation with your parent, their doctor, and your siblings.